Preservative receptacle.



I. T. WHITTON. PRESERVATIVE REOBPTAGLB.

APPLIOATION I ILBD MAR. 1, 1913.

Patnted Feb. 24, 1914,

INVENTOR w-mw ma 'IOTT01\T.WHITTON, or" wmmrne, MANITOBA, CANADA.

PRESERVATIVE RECEPTACLE.

oaaiaa. 7

Specification of Letters Patent.

Patented Feb. 24,1914;

Application filed March 1, 1913. Serial No. 7 51,634.

To all whom it may concern:

Be it known that I, IRA To r'roN WHrr- TON, of the city of Winnipeg, in the Province of Manitoba, Canada, have invented certain new and useful Improvements in Preservative' Receptacles, of which the following is the specification.

, The invention relates to a receptacle for the reception of various perishable commodi ties the present device being particularly adaptable for preserving milk or cream receptacle.

detailed vertical sectional view through a from the producento the consumer.

The object of-the invention is to provide a durable inexpensive and eflicient receptacle which will preserve the produce or material placed therein for a considerable period and it consists essentially in the arrangement and construction of parts hereinafter more particularly described and later pointed out in the appended claim.

Figure 1 represents a side view of the complete receptacle. tional view centrally through the same. Fig. 3 is an'enlarged detailed vertical sectional view through a portion of the bottom of the Fig. 4 represents an enlarged portion of the top of the receptacle. Fig. 5 represents a side view of one of the hasps carried by the outer lid.

In the drawing like characters of refer- Ence indicate corresponding parts in each gure. I

1 represents an outer cylindrical casing provided with a suitable bottom 2 and having the top provided with an inwardly directed flange 3 which flange carries an inner cylindrical casing 4 and an intermediate cylindrical casing 5 both of which are supplied with closed bottoms 6 and 7 respectivelv. The casings 1, 4 and 5 are spaced apart, the space between the inner and intermediate casings forming a vacuum chamber 8 while the space between the intermediate and outer casing provides a space for a heat insulating material 9 such as mineral wool. The opposing walls of the vacuum chamber are lined with an asbestos sheeting 10 and 11, the sheetings being placed on the outer face of the inner casing and the inner face of the intermediate casing. The outer wall of the intermediate Fig. 2 is a vertical secparent from Figs. 2 and 3 of the drawing. The above parts constitute what might be called in general terms the body of the receptacle. I I

14 is a screw threaded socket located centrally in the bottom 7 of the intermediate casing which socket receives a threaded valve casing 15 which threads into the socket and extends into the vacuum chamber 8 reserved between the inner and intermediate casings. The casing incloses a two-way valve 16 which when open allows the air to be'withdrawn from the chamber 8. I have not considered it necessary to enter into the details of the valve as any suitable form could be used. The valve casing is closed by a screw plug 17. A packing strip 18 is inserted between a flange provided on the socket and a flange on the valve casing and it will be noticed that these parts are pro vided with threads. This packing strip insures an air tight joint when once the easmg is screwed tightly into the socket.

19-is a screw plug threaded into a socket 20 located in the bottom 2 of the outer cas- 1n directly opposite the socket 14 already re erred to. This screw plug, when removed allowsvone to have access to the inner screw plug and the valve. A partition 21extends between the bottoms 2 and 7 of the casing and adjoining the sockets the purpose of'which will be apparent.

22 represents an inner cover for the receptacle, which cover is rovided with a vacuum chamber 23 and as an extending flange 23 which rests normally on top of the flange 3 already referred to. The cover carries an interiorly screw threaded socket 24 which receives a valve casing 25, the casing being screw threaded into the socket and extending into the vacuum chamber 23.

26 is a two-way valve located in the casings and opening to the interior of the chamber 23. The valve is supplied with an extendin lever 27 so that it can be manipulated rea ily to allow or stop the passage of air as the case may be. I might here explain that the valve 16 is of the same formas the valve 26. v 28 is a screw plug threaded into the valve casing and inclosing the valve.

29 is an outer cover for the receptacle which is provided with an inwardly turned 31 and 32 are'similar slotted hasps car- "ried by the outer cover at opposite sides the staples and loc'ln'ng the top cover to the thereof. The outer casing is fitted at one side with a. permanent hook 33 and at the other side with a staple 34 the hook and staple being designed to receive the hasps when the said hasps are thrown down.

35 represents a padlock passing through I attaching a vacuum pump in turn to the valves. from the chambers the valves are closed, the pum is removed and'the screw plugs are read usted. When one desires receptacle he undoes the lock 35, swings open the hasp 32 and then raises the lid 29, the hasp 31 forming a. pivot for the lid. He then removes the inner lid which allows him to place the material in the inner casin and it will be noticed that the inwardly d lrected portion of the flange 30 forms a lock for the inner lid when once the outer lid is fastened. a

What; I claim as my invention is;

I The combination comprising an outer casing provided with a suitable closed/bottom When the air has been exhaustedto place material in the and having an inwardly directed flange toward the top, an inner casing suspended from the flange and contained within the outer casing, said inner casing being supplied also with a closed bottom, an intermediate casing interposed between and spaced from the inner and outer casings, said intermediate casing being also carried by the flange and provided with a closed bottom, heat insulating material interposed between the intermediate and outencasing, a suitably inclosed valve carried by the bottom of the intermediate casing and opening to the space reserved between the inner and intermediate casin a screw plug opposite the valve and carrie by the bottom of the outer casing, an inner cover fitting into the inner casing and provided with an extending flange restin -"on the flange aforesaid, said cover being. iormed with a hollow interior, a suitably m cased valve carried by the cover andopening to the interior thereof and an outer cover provided with an inturned L- shaped flange plugging into the upper end of the outer casing and bearing normally on the upper face of the flange of the inner cover, as and for the purpose specified.

Signed at winnipeglt-hls 28 day of January 1913.

- I IRA TOTTON WHITTON. In the presence of- I G. S. Roxnrmen,

L. GOULD. 

